Improvement in wood-turning lathe



dinard gratta @sind chipre.

NATHAN Nolens, CHAHLHs s. BLACK, AND HORACE s. BLAcK, or BH- CHANAN,MICHIGAN.

Letters Patent No. 99,696, dated February 8, 1870.

The Schedule referred to in these Letters Patent and making part rf thesame.

To whom 'it may conce/rn.:`

Be it known that we, NATHAN Nonnrs, CHARLES' S. BLACK, and HORACE S.BLACK, ot' Buchanan, in the county of Berl-ien, and State of Michigan,have invented a. new and useful Improvement in Gauge-y Lathes; and we dodeclare that the bllowiugis a true and accurate descriptionthereoreference being had tothe accompanying drawings, and to theletters of reference marked thereon, and being a part of thisspecification, in whichc Figure 1 is a perspective View of our improvedlathe; Figure 2 is a cross-section, on the line a; x, in iig.

J, showing' the mechanism for moving the vibrating for turning bedposts,table-legs, balusters, and other like articles, ii'om bolts of wood, andconsists in the employment ot' a cutter, or series of cutters,corrugated to the form of spindle designed to be turned, and bolted to acutter-bar, pivoted in a vibrating frame; in a mechanism for lniugiugthe cutters up to the bolt centred on the spindles, in a series ofsteadyrests which automatically move up with the cutters, and supportthe spindle being turned, and'in the general arrangement oi' its parts,as hereinafter more fully shown and set forth. In the drawings- V v Arepresents 'the bed-plate of our lathe, supported 4 4by properstandards, a., and lmving attached at either end the head-block B, andtail-block C, ot' ordinary construction; 1n the head and tail-blocks areplaced the hcad-spindle b and .tail-spindle c, the latter being movedlaterally in'its sleeve by a lever, D, ol other appropriate device.

Projecting from the front side ofthe head and tail# blocks' are bracketsE, in which is journaled the rockshai't F, operated by a lever, @,towhich a trea-dle may he attached, it' desired. The rock-shaft is alsoprovided with upward-projecting arms G, and downward-projecting arms G'.

H is a vibratinglirame, pivoted in boxes g, in the bed-plate. In theupper corners of this frame ispivoted `a knife-bar, N, to which arebolted, in sections, corrugatedor curved cutters I, which are formed tothe shape ot' the article to be turned. When it becomes necessary tosharpen the cutters, the vdogs J, which drop against the cutter-bar tohold it in place, are withdrawn, the cutter-bar is then swung up, andrests upon the ends ofthe dogs, as shown in tig. 3.

A throat-nomi, whose front edge is made to corrcspond withthecorrugations ot' the cutters, is secured to and projects inward fromthe cutter-trame H,for|n ing, with the cutters, a throat, through whichthe shavings pass. To determine the depth of cut on the ends ot' thecutter-bar, are brackets, through which pass set-screws j, abuttingagainst the top of the frame H.

To steady the wood while being'turned, steady-rests K, tig. 3, arepiroted to the frame H, and are operated as hereinafter described. i i

' L is a vibrating f1ame,pivoted in boxes, g', inthe same manner as 'thecutter-frame H attached to its.

top, 'and projecting inward, are secured inclined planes l, directlyopposite the steady-rests K.

M are links connecting the arms G, of the rockshai't, with the top ofthe cutter-trame H, and M are similar links, connecting Vthe arms G withthe top of the vibrating trame L. By depressing the .lever e .of therock-shaft, the flames H and. L will move toward each other, thecutterscommencing to take a shaving from the bolt. A At the sametin1ethe cam-shaped ends oi' the steady-rests K, sliding up the inclinedplanes l, press against the under side of' thewood,l and support ituntil4 the axtiie is completed. VRa-ising the lever,'the tramcs recedefromeach other, when the finished article may be removed from the lathe.

Vhat we claim as our invention, and desire to secure by Letters Eatent,is

1. The cutters I, secured to thc knife-bar N, the

same being pivoted in the vibrating frame H, all the parts beingconstructed, arranged, and operating sub,-4

stantially as shown and described, and for the purpose' specified.

2. The combination of the bed A. with the head and tail-blocks B a'nd G,rock-shaft F, providedwith lever e, and cams G G-, links M M', the.vibrating frames H and L, the steady-rests K, and inclined planes I,when constructed, alrangedraml operating substantially as shown andldescrihethaud for the pur;

poses herein specified..

` NATHAN NORRIS.v

CHARLES- SfBLAGK. HORACE' IS. BLACK.

' Witnesses:

WILLIAM D. KINGERY, J osEPH Brass.

